[Growth curves for premature infants during the 1st year of life]

M A Peñuela-Olaya1, L A Fernández-Carrocera, M Velazco-Pasillas

  • 1Departamento de Seguimiento Pediátrico, Instituto Nacional de Perinatología, México, D.F.

Insights

Premature infants show distinct growth patterns in their first year. Specific growth charts are essential for monitoring premature babies, as their growth rate differs from full-term infants.

Area of Science:

  • Pediatrics
  • Neonatology
  • Human Growth and Development

Background:

  • Premature infants exhibit unique growth trajectories compared to full-term neonates.
  • Accurate anthropometric monitoring is crucial for assessing the health and development of premature infants.

Purpose of the Study:

  • To establish specific anthropometric growth curves for premature infants during their first 12 months of life.
  • To compare the growth velocity and patterns of premature infants with those of full-term infants.

Main Methods:

  • Longitudinal anthropometric evaluation of 107 premature newborns over their first year.
  • Measurement of weight, height, and various perimeters (cephalic, thoracic, abdominal, bronchial).
  • Data presented in percentiles (10th, 50th, and 90th) for each variable.

Main Results:

  • Premature infants demonstrated a symmetrical logarithmic growth pattern.
  • The highest growth rate occurred in the first six months, decreasing in the second half of the year.
  • By 12 months, premature infants reached the 50th percentile for weight, height, and cephalic perimeter compared to full-term infants.

Conclusions:

  • Specific growth curves for premature infants are vital due to their different growth speed and rhythm.
  • Premature infants exhibit significantly faster growth rates for weight and height compared to full-term infants in the first year.
  • These findings underscore the need for tailored growth monitoring tools for the premature population.

Related Concept Videos

Life Histories01:29

Life Histories

Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...
Population Growth00:57

Population Growth

Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.However, realistic environmental conditions limit the number of...
Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight, compared...
Survival Curves01:18

Survival Curves

Survival curves are graphical representations that depict the survival experience of a population over time, offering an intuitive way to track the proportion of individuals who remain event-free at each time point. These curves are widely used in fields such as medicine, public health, and reliability engineering to visualize and compare survival probabilities across different groups or conditions.
The Kaplan-Meier estimator is the most common method for constructing survival curves. This...
Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
Exploration...
Exponential Equations for Modeling Growth01:26

Exponential Equations for Modeling Growth

Exponential models are essential for describing rapid, multiplicative changes in natural systems, such as population growth. When a population doubles at regular intervals, the process can be modeled using a suitable base. For instance, a bacterial culture that doubles every three hours follows the model n(t)=n0⋅2t/3, where n(t) is the population at the time t.A more general model uses the natural base e, especially for continuous growth. This takes the form n(t)=n0⋅ert, where r is the relative...